RockWoofCheck access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.
Found alongside
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
443 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
223 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
172 sites
Beryl
Mohs 7.5–8. Six-sided crystals; aquamarine and emerald are beryl. Mindat
92 sites
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
66 sites
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
59 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Fremont County (110) · Jefferson County (105) · Douglas County (43) · Park County (32) · Chaffee County (31) · Larimer County (23) · Clear Creek County (20) · Gunnison County (19) · Boulder County (16) · Teller County (12) · El Paso County (8) · Archuleta County (5) · Custer County (4) · Saguache County (3) · Gilpin County (2) · Pitkin County (2) · Mesa County (2) · Jackson County (2) · Lake County (1) · Montrose County (1) · Routt County (1) · Huerfano County (1)
Sites (first 60)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Newett Quarries | Feldspar | Albite | Past Producer | 38.853, -105.998 |
| Meyers Mine | Feldspar, Mica | Albite, Amblygonite, Beryl, Bismutite, Lepidolite, Microcline, Muscovite | Producer | 38.481, -105.292 |
| Homestake Mine | Feldspar | Albite, Apatite, Beryl, Muscovite | Past Producer | 38.627, -105.957 |
| Silver Rocker Group | Feldspar, Mica | Albite, Beryl, Columbite, Garnet, Muscovite, Orthoclase, Tantalite | Producer | 38.626, -105.956 |
| Rock King Prospect | Feldspar, Mica | Albite, Beryl, Microcline, Muscovite | Past Producer | 38.632, -105.959 |
| Shirley Group | Beryllium, Niobium (Columbium), Tantalum, REE | Albite, Beryl, Microcline, Muscovite | Occurrence | 38.608, -105.994 |
| Coors Pegmatite | Feldspar, Mica | Albite, Cleavelandite, Microcline | Past Producer | 39.700, -105.373 |
| White Angel, White Hills | Feldspar | Albite, Oligoclase | Occurrence | 38.442, -105.776 |
| Clora May Mine | Feldspar | Allanite, Beryl, Bismutite, Euxenite, Xenotime | Past Producer | 38.860, -105.995 |
| Burroughs Feldspar Mine | Feldspar, Beryllium, Mica | Allanite, Beryl, Columbite, Euxenite, Gadolinite, Microcline, Monazite, Muscovite, Pyrochlore, Tantalite, Xenotime | Past Producer | 39.681, -105.323 |
| Roscoe Gulch Pegmatites | Beryllium, Mica, Feldspar | Allanite, Beryl, Microcline, Monazite, Muscovite | Past Producer | 39.747, -105.373 |
| Luella Pegmatite | Feldspar | Allanite, Bismutite, Euxenite, Fluorite, Microcline | Past Producer | 38.849, -106.052 |
| Baumer Pegmatite Prospect | Uranium, Thorium, REE | Allanite, Euxenite, Ilmenite, Monazite | Occurrence | 38.708, -105.489 |
| Crystal No. 8 Mine | Feldspar | Allanite, Euxenite, Microcline | Past Producer | 38.829, -106.024 |
| Snow Flake Mine | REE, Feldspar | Allanite, Fergusonite, Thalenite, Zircon | Producer | 39.064, -105.138 |
| Teller Pegmatite Claim | REE, Fluorine-Fluorite | Allanite, Gadolinite, Microcline, Molybdenite, Monazite, Orthoclase, Quartz, Xenotime | Producer | 38.971, -105.370 |
| Shuttle Run Mine | Feldspar, Quartz | Allanite, Gadolinite, Quartz | Past Producer | 39.374, -105.200 |
| Madonna No. 3 | REE, Quartz, Feldspar | Allanite, Gadolinite, Quartz, Microcline | Past Producer | 39.377, -105.196 |
| Madonna No. 2 | Quartz, Feldspar | Allanite, Gadolinite, Quartz, Microcline | Past Producer | 39.377, -105.195 |
| Big Bertha Mine | Quartz, Feldspar | Allanite, Xenotime | Past Producer | 39.339, -105.218 |
| Shaffer Hill | Feldspar, Beryllium, Gemstone | Amazonstone, Beryl, Feldspar, Topaz | Producer | 39.719, -105.399 |
| Crystal Park Area | Beryllium, Gemstone | Amazonstone, Zircon | Producer | 38.832, -104.932 |
| Sedalia Mine | Zinc, Copper | Anglesite, Aurichalcite, Chalcanthite, Chalcocite, Chalcopyrite, Chrysocolla, Covellite, Cuprite, Gahnite, Galena, Gold, Hydrozincite, Malachite, Silver, Smithsonite, Sphalerite, Tenorite, Willemite | Past Producer | 38.590, -106.020 |
| Black Cloud Mine | Feldspar | Apatite, Beryl, Columbite, Feldspar, Fluorite, Microlite, Pyrochlore, Quartz, Tantalite | Producer | 38.938, -105.213 |
| Thomas-Union Lodes | Quartz, Feldspar, Mica, Garnet, Gemstone | Apatite, Garnet, Muscovite, Quartz | Producer | 39.541, -105.195 |
| Feldspar Mine | Barium-Barite | Barite | Producer | 38.238, -105.252 |
| Beardsley Deposit | Thorium, REE | Barite, Thorite | Past Producer | 38.120, -105.322 |
| Silver Glen Ranch Pegmatite | Mica, Feldspar | Bertrandite, Beryl, Cleavelandite, Columbite, Microcline, Microlite, Monazite, Thorite | Past Producer | 39.667, -105.303 |
| Grover Mine | Feldspar, Mica | Bertrandite, Beryl, Columbite, Microcline, Monazite, Muscovite | Past Producer | 39.707, -105.440 |
| Black Canyon Beryl Prospect | Beryllium | Beryl | Occurrence | 38.446, -107.466 |
| Mt. Olympus Mine | Beryllium, Mica | Beryl | Past Producer | 40.691, -105.257 |
| Santa Fe Mt., Sawmill Gulch | Beryllium, Garnet, Feldspar, Mica | Beryl, Biotite, Feldspar, Garnet | Producer | 39.719, -105.474 |
| Bigger Mica Mine | Feldspar, Mica, Beryllium | Beryl, Bismuthinite, Bismutite, Cassiterite, Columbite, Microcline, Monazite, Muscovite | Past Producer | 39.565, -105.215 |
| School Section Mine | Mica, Beryllium, Feldspar | Beryl, Bismutite, Chalcocite, Chrysocolla, Columbite, Covellite, Malachite, Microcline, Muscovite, Silver, Thorite | Producer | 38.472, -105.344 |
| Mica Lode Mine | Quartz, Mica, Feldspar, Beryllium | Beryl, Bismutite, Chalcocite, Lepidolite, Malachite, Microcline, Muscovite | Past Producer | 38.479, -105.302 |
| Meyers Ranch | Feldspar, Mica, Beryllium, Niobium (Columbium) | Beryl, Bismutite, Columbite, Microcline, Monazite | Past Producer | 38.793, -105.596 |
| Border Feldspar Prospect | Feldspar, Quartz, Mica | Beryl, Bismutite, Feldspar, Microcline, Muscovite, Quartz | Past Producer | 38.463, -105.321 |
| Mayesville District | Uranium | Beryl, Chalcopyrite, Galena, Gold, Muscovite, Pyrite, Uranophane | Past Producer | 40.694, -105.630 |
| Wisdom Ranch Prospect | Beryllium | Beryl, Chrysoberyl | Past Producer | 40.598, -105.365 |
| Crystal Mountain Pegmatite District | Mica, Beryllium, Uranium, Feldspar | Beryl, Chrysoberyl, Microcline, Muscovite, Tourmaline, Uraninite | Producer | 40.539, -105.433 |
| Wasson Pegmatite | Beryllium, Feldspar, Mica | Beryl, Columbite, Euxenite, Microcline, Muscovite, Tantalite | Past Producer | 39.703, -105.315 |
| Columbine | Feldspar, Mica, Beryllium, Niobium (Columbium), Copper | Beryl, Columbite, Feldspar, Malachite, Mica | Producer | 40.118, -105.326 |
| Grover | Beryllium, Niobium (Columbium), REE, Tantalum, Mica, Feldspar | Beryl, Columbite, Feldspar, Mica, Monazite, Tantalite | Producer | 39.714, -105.452 |
| Bonus Extension Group | Beryllium | Beryl, Columbite, Microcline, Muscovite, Tantalite | Producer | 38.599, -106.001 |
| Tall Timber Group | Mica, Beryllium, Feldspar | Beryl, Columbite, Muscovite, Tantalite | Past Producer | 39.646, -105.273 |
| Christie Ward-Lucky Thirteen 1&2 | Feldspar, REE, Beryllium, Niobium (Columbium), Quartz, Mica | Beryl, Columbite, Thorite | Producer | 38.992, -105.393 |
| Coffey Pot Claims | Feldspar | Beryl, Feldspar | Occurrence | 38.629, -105.983 |
| Phantom Lode | Feldspar, Mica | Beryl, Feldspar, Fluorite, Mica | Past Producer | 38.569, -105.117 |
| Jones & Young Lease | Fluorine-Fluorite | Beryl, Feldspar, Fluorite, Quartz | Past Producer | 38.371, -105.745 |
| Snyder, Saddleback Mtn. | Quartz, Garnet, Beryllium, Mica, REE, Iron, Feldspar | Beryl, Feldspar, Gahnite, Garnet, Hematite, Mica, Quartz, Xenotime | Producer | 39.719, -105.436 |
| Buckman Ranch Pegmatite | Iron, Beryllium, Gemstone, Quartz, Garnet, Mica, Feldspar | Beryl, Feldspar, Garnet, Magnetite, Mica, Quartz, Tourmaline | Occurrence | 39.582, -105.242 |
| Chief #1-5 Mine | Quartz, Feldspar, Beryllium, Lithium | Beryl, Feldspar, Lepidolite | Producer | 38.483, -105.596 |
| Bull Gulch Prospect | Mica, Feldspar | Beryl, Feldspar, Mica | Prospect | 38.470, -105.615 |
| Beryl #2 | Niobium (Columbium), Feldspar, Beryllium, Mica | Beryl, Feldspar, Mica | Producer | 40.073, -105.379 |
| Little Bennie | Beryllium, Feldspar, Mica | Beryl, Feldspar, Mica | Producer | 40.093, -105.342 |
| Beryl Lode | Beryllium, Feldspar, Mica | Beryl, Feldspar, Mica, Quartz | Producer | 40.109, -105.337 |
| Willow Creek | Feldspar, Beryllium, Mica, Niobium (Columbium), Tantalum | Beryl, Feldspar, Mica, Tantalite | Occurrence | 38.580, -106.630 |
| Old Glory Claim | Feldspar, Mica | Beryl, Feldspar, Muscovite | Past Producer | 38.631, -105.963 |
| Cressman Gulch | Beryllium, Mica, Feldspar | Beryl, Feldspar, Muscovite | Producer | 39.790, -105.250 |
| Riegel Feldspar Prospect | Mica, Feldspar | Beryl, Feldspar, Muscovite | Occurrence | 38.630, -105.967 |
Back to Rockhounding in Colorado.
How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.
Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.
Updated